How to Reset the Tire Pressure Light (TPMS) on a Ford Expedition

1. Drive above 20 mph (32 km/h) for at least two minutes, then park where you can reach all four tires with an air pump.
2. Switch the ignition off, then on without starting the engine.
3. Switch the hazard flashers on then off three times within 10 seconds; the horn sounds once when reset mode starts.
4. Remove the left front valve cap and decrease the air pressure until the horn sounds.
5. Repeat on the right front tire, then the right rear tire, then the left rear tire.
6. Switch the ignition off.
7. Set all four tires to the recommended pressure shown on the Safety Compliance Certification Label.

• Reset after each tire rotation on vehicles with different front and rear recommended pressures.
• Do not wait more than two minutes between tires or the system can time out and you must repeat all four wheels.
• Two horn sounds mean the reset was unsuccessful and must be repeated.

Source: 2026 Ford Expedition owner's manual, PDF pages 442, 443. Steps are summarized in our own words (AI-assisted, checked against the cited pages 2026-10-18). Other model years can differ; your manual has the final word.